齿形链装配设计与试验  

Assembly Design and Experiment of Silent Chain

作　　者：丁颂[1] 迟春燕[2] 邵桂阳 蒋东霖[1] 徐晶[1] 修瑞仙[1] 

机构地区：[1]长春师范大学工程学院,吉林长春130032 [2]吉林建筑大学土木工程学院,吉林长春130118

出　　处：《机械传动》2015年第5期158-161,共4页Journal of Mechanical Transmission

基　　金：长春师范大学自然科学基金(201302824)

摘　　要：为提高齿形链的使用寿命,提出了一种新的齿形链装配方法。通过把销轴两端间隙配合的链板、过盈配合的垫片换成外链板过盈配合,接头处用卡簧止锁,提高了链条抗横向冲击的能力。对外链板过盈配合和垫片过盈配合进行了压出力对比试验,实验结果表明,外链板的压出力是垫片压出力的4.52倍;对接头止锁件进行剪切力失效对比试验,实验结果表明,卡簧的失效剪切力是2×12开口销的3.87倍。通过越野车1万公里定性试验,发现传统装配方法齿形链每隔700公里左右需要修配或更换齿形链,而新装配方法的齿形链在整个试验过程中没有发生因链板脱落或接头压出而失效。两种实验结果都证明了新齿形链装配方法的合理性和抗横向冲击的有效性。In order to improve the service life of the silent chain,a new silent chain assembly method is proposed.The chain plate of clearance fit at the ends of pin and pad of interference fit are changed to outer chain plate of interference fit where the joint is locked with the circlip to improve the chain ability to withstand lateral impact.The extrusion force test is conducted on outer chain plate of interference fit and pad of interference fit,the test result shows that extrusion force of outer chain plate is 4.52 times that of pad.The shear force failure test is conducted on joint lock piece and the test result shows that the failed shear force of the s circlip is 3.87 times that of the 2×12cotter pin.The qualitative test of ten thousand kilometers of off-road vehicle shows that the silent chain installed with traditional method has to be repaired or replaced for every seven hundred kilometers while the silent chain with new assembly method does not fail due to falling off of the chain plate or extrusion of the joint.These two experimental results both prove the reasonableness of new assembly method for silent chain and effectiveness to withstand lateral impact.

关 键 词：齿形链 装配设计 压出力 剪切力 

分 类 号：TH132.45[机械工程—机械制造及自动化]